Some tribes of the Amazon rainforest obtain a poison for their hunting arrows from certain brightly colored frogs. Why are these frogs brightly colored?
0%
To keep them cool
50%
It makes their skin completely waterproof
50%
The poison in the frogs makes their skin turn brightly colored
0%
For protection
Q.3.
What is the most likely reason from the answers below to explain why roses have thorns?
0%
The thorns grip on walls to keep the rose plants from falling over
100%
The thorns are there to stop animals from eating the rose plant
0%
They grow thorns because they help form the flowers
0%
Thorns attract insects for pollination
Q.4.
Organisms that are tolerant of high levels of salt, high temperatures or high pressures are called what?
0%
Extremophiles
0%
Extremophobes
0%
Extremocytes
0%
Extremophages
Q.5.
The jackrabbit is an animal that lives in the desert. One of its adaptations is that it has much larger ears than rabbits living in Britain. Which of the following is the least likely to be true?
0%
Bigger ears can help it to hear predators coming
100%
Hot air muffles sound so it needs bigger ears to hear
0%
It can lose heat from its ears instead of sweating
0%
Big ears are more attractive during the mating season
Q.6.
Which of the following adaptations help to make sharks such good predators?
0%
Rough skin
100%
Streamlined body
0%
Poor sense of smell
0%
All of the above
Q.7.
The Sahel is the area at the southern edge of the Sahara Desert in Africa. As the human population in the Sahel has increased they have created more farmland for growing crops. The populations of the various wild animals has ...
0%
increased because there is more food for them to eat
0%
decreased because their normal food and habitat has been replaced by farmers' crops
0%
increased because the farmers children like to feed the wild animals
0%
decreased because they don't like farmers
Q.8.
For which of the following do animals compete?
0%
Mates
0%
Territory
0%
Food
0%
Light
Q.9.
Plants compete for ...
0%
only water and nutrients
0%
water, nutrients, space to grow and light
0%
only water and light
0%
only space to grow and light
Q.10.
An adaptation is:
0%
A characteristic that is useful to an organism
100%
A competition between two organisms
0%
Only relevant to plants
0%
Only relevant to animals
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